CVE-2025-1211

medium

Description

Versions of the package hackney before 1.21.0 are vulnerable to Server-side Request Forgery (SSRF) due to improper parsing of URLs by URI built-in module and hackey. Given the URL http://[email protected]/, the URI function will parse and see the host as 127.0.0.1 (which is correct), and hackney will refer the host as 127.2.2.2/. This vulnerability can be exploited when users rely on the URL function for host checking.

References

https://www.blackhat.com/docs/us-17/thursday/us-17-Tsai-A-New-Era-Of-SSRF-Exploiting-URL-Parser-In-Trending-Programming-Languages.pdf

https://security.snyk.io/vuln/SNYK-HEX-HACKNEY-6516131

https://github.com/benoitc/hackney/commit/9594ce58fabd32cd897fc28fae937694515a3d4a

https://gist.github.com/snoopysecurity/996de09ec0cfd0ebdcfdda8ff515deb1

Details

Source: Mitre, NVD

Published: 2025-02-11

Updated: 2026-04-29

Risk Information

CVSS v2

Base Score: 5.1

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

Severity: Medium

CVSS v4

Base Score: 6.3

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:L

Severity: Medium

EPSS

EPSS: 0.00076